The 12-24 mm lens, with 10 elements in 8 groups, weighs 208 g, has one extra low dispersion glass lens and two aspherical glass lenses which are said to guarantee superb sharpness and low chromatic aberration.

The 45 mm lens, with 7 elements in 6 groups, has a stepping motor for a fast and super-quiet AF, weighs 115 g (without the hood), and has a solid metal body and metal mount.